Overview Product Description 225666 New-No Box; Norgren 4158-04 O-Ring Kit; 3/4"; 1 "; 1-1/4" Regulators; . Item is New; unused; no factory packaging. Austin Surplus SKU: 225666 Location: GRG-R01-P05-S04-G-0001136 Product Videos Custom Field MPN 4158-04 Product Reviews